<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <!-- 引入 lib 目录下的 bootstrap 样式表 -->
  <link rel="stylesheet" href="./lib/bootstrap-v4.6.0.css">
  <style>
    :root {
      font-size: 15px;
    }

    body {
      padding-top: 15px;
    }
  </style>
</head>

<body>

  <!-- 栅格系统 -->
  <div class="container-fluid">
    <!-- 栅格系统中的一行 -->
    <div class="row">
      <!-- 左侧的表格，占了 8 列 -->
      <div class="col-sm-8">
        <table class="table table-bordered table-striped table-dark table-hover text-center">
          <thead>
            <!-- 表头行 -->
            <tr>
              <th scope="col">Id</th>
              <th scope="col">书名</th>
              <th scope="col">作者</th>
              <th scope="col">出版社</th>
              <th scope="col">操作</th>
            </tr>
          </thead>
          <tbody>
            <!-- 表格中的每一行 -->
            <!-- <tr>
              <th scope="row">xxx</th>
              <td>xxx</td>
              <td>xxx</td>
              <td>xxx</td>
              <td>
                <button type="button" class="btn btn-link btn-sm">删除</button>
              </td>
            </tr> -->
          </tbody>
        </table>
      </div>

      <!-- 右侧的添加区域，占了 4 列 -->
      <div class="col-sm-4">
        <!-- 添加图书的卡片 -->
        <div class="card text-white bg-secondary sticky-top">
          <div class="card-header">添加新图书</div>
          <form class="card-body bg-light" id="addForm">
            <!-- 书名 -->
            <div class="input-group mb-3">
              <div class="input-group-prepend">
                <span class="input-group-text">书名</span>
              </div>
              <input type="text" class="form-control" placeholder="请输入图书名称" name="bookname">
            </div>
            <!-- 作者 -->
            <div class="input-group mb-3">
              <div class="input-group-prepend">
                <span class="input-group-text">作者</span>
              </div>
              <input type="text" class="form-control" placeholder="请输入作者名字" name="author">
            </div>
            <!-- 出版社 -->
            <div class="input-group mb-3">
              <div class="input-group-prepend">
                <span class="input-group-text">出版社</span>
              </div>
              <input type="text" class="form-control" placeholder="请输入出版社名称" name="publisher">
            </div>
            <!-- 添加按钮 -->
            <button class="btn btn-dark" type="submit">添加</button>
          </form>
        </div>
      </div>
    </div>
  </div>

  <script src="./lib/common.js"></script>
  <script src="./lib/axios.js"></script>
  <script>
      // 渲染数据
      function render(){
        axios.get('http://www.liulongbin.top:3006/api/getbooks').then(({data:{status,msg,data}})=>{
          const newStr = data.map(({id,bookname,author,publisher})=>{
            return `
            <tr>
              <th scope="row">${id}</th>
              <td>${bookname}</td>
              <td>${author}</td>
              <td>${publisher}</td>
              <td>
                <button type="button" class="btn btn-link btn-sm del" data-id=${id}>删除</button>
              </td>
            </tr>
            `
          }).join('')
          qs('tbody').innerHTML = newStr
        })
      }
      render()

      // 添加图书
      qs('#addForm').addEventListener('submit',function(e){
        e.preventDefault()
        const bookname = qs('[name=bookname]').value
        const author = qs('[name=author]').value
        const publisher = qs('[name=publisher]').value
        if(!bookname || !author || !publisher){
          return alert('内容不能为空！')
        }
        axios.post('http://www.liulongbin.top:3006/api/addbook',{bookname,author,publisher}).then(({data:{status,msg}})=>{
          if(status !== 201) return alert(msg)
          render()
          qs('#addForm').reset()
        }) 
      })

      // 删除图书
      qs('tbody').addEventListener('click',function(e){
        const {classList,dataset} = e.target
          if(classList.contains('del')){  
            const id = dataset.id
            axios.delete('http://www.liulongbin.top:3006/api/delbook',{params:{id}}).then(({data:{status,msg}})=>{
              if(status !== 200) return alert(msg)
              render() 
            })
          }
      })
  </script>
</body>

</html>